The term, 'Apple Genius' right now is the most Oxymoronic Oxymoron that ever Oxymoron'ed.
I spent HOURS at the Apple store with my iPhone 16 Pro, my Bluetooth device, and the equipment to demonstrate the problem.
The "Genius" spent that time wiping the phone blaming that perhaps one of the apps I have is causing the issue, testing it again, and then taking the phone to the back room to give it some satanic ritual and final test.
He comes back and says, "We will replace the phone, but we don't have the 1TB model in the store. We will have to order one in."
Then I asked
ONE.
SIMPLE.
QUESTION.
"Can you connect one of YOUR iPhone 16s to the Bluetooth device?"
He tried.
It didn't work either.
So, this has been and is a grandiose waste of time and resources for a matter which is still not resolved.
Apple: Fix this.